Maps update issue

I'm in big trouble. A couple days ago I went in the Map Manager and found an update for Europe (I live in France)

Then, I sarted to update but when I saw it will take more than 10 hours I stopped. 

And now when I go to Navigation a message pops up : 

It seems that I deleted my own map in the process.

Back to the Map Manager after searching I found the update for Europe but this time : insufficient space I have to delete 1.7 GB

What can I do now ? Please help